Confirmation and characterization of interspecific hybrids of <Emphasis Type="Italic">Passiflora</Emphasis> L. (Passifloraceae) for ornamental use |
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Authors: | Eileen Azevedo Santos Margarete Magalhães Souza Priscilla Patrocínio Abreu Leo Duc Haa Carson Schwartzhaupt da Conceição Ioná Santos Araújo Alexandre Pio Viana Alex-Alan Furtado de Almeida Jôsie Cloviane de Oliveira Freitas |
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Institution: | 1.Departamento de Ciências Biológicas,Universidade Estadual de Santa Cruz (UESC),Ilhéus,Brazil;2.Empresa Brasileira de Pesquisa Agropecuária (Embrapa Cerrados),Planaltina,Brazil;3.Departamento de Ciências Vegetais,Universidade Federal Rural do Semi-árido (UFERSA),Mossoró,Brazil;4.Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Centro de Ciências e Tecnologia Agropecuária,Campos dos Goytacazes,Brazil |
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Abstract: | Three new varieties of Passiflora hybrids were developed from crosses between P. sublanceolata J. M. MacDougal (ex P. palmeri var. sublanceolata Killip) versus P. foetida var. foetida L. Twenty putative hybrids were analyzed. Hybridizations were confirmed by RAPD and SSR markers. The RAPD primer UBC11 (5′-CCGGCCTTAC-3′)
generated informative bands. The SSR primer A08FP1 amplified species-specific fragments and heterozygote status was observed
with the two parent bands 240 and 280 bp. The molecular markers generated by primers were analyzed in terms of the presence
or absence of specific informative bands. The morphological characterization of the hybrids enabled their differentiation
into three groups, identified as: (1) Passiflora ‘Alva’, composed of five hybrid plants with white flowers, large corona, light purple filaments at base, white and purple/white
banding to apex; (2) P. ‘Aninha’, composed of six hybrid plants with pale pink flowers, corona filaments reddish/purple at base, white, purple/white
banding to apex; (3) P. ‘Priscilla’, composed of nine hybrid plants with white flowers, small corona, filaments dark purple at base, white and purple
to apex. The genomic homology of parent plants was verified by cytogenetic analysis. Both parents were 2n = 22. Meiosis was regular in genitors and hybrids. Aneuploidy was observed at hybrid groups P. ‘Alva’ and P. ‘Priscilla’ (2n = 20). Other authors had already observed the same number of chromosomes for some P. foetida genotypes. Obtaining valuable interspecific hybrids opens up new perspectives to offer opportunities in agribusiness for
producers and to arouse the interest of consumers into using passion flowers in the Brazilian ornamental plant market. |
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